Automatic gate propeller



Aug. 9,1927. 1,638,202

, J. R. JACKSON v I AUTOMATIC GTE PROPELLER Filed March 17 1921 I5 Sheets-Sheet l JQ` N N N w ma' M Aug. 9 1927,. 1,638,202

J. R. 'JACKSON AUTOMATIC GATE PROPELLER Filed March 1 7 1921 5 Sheets-Sheet 2 l ue 11101 Aug. 9 1927.

.J. R. JACKSON AUTOMATIC GATE PROPELLER sheets-sheet 3 Filed March 17 1921 Patented Aug. 9 1927.

JAMES Rf JAoKSoN, F NASHVILLE, TENNESSEE.

ATON'IA'T'IC GernA PRPELLER.

Apnatioh fiied Mh 17, 19211. serial No. 453,023'.

thehcasinpjr and in the, `upper end of the 4tubular slm. 1.,'. 4) kwhich carries the gate 5. second shaft 11 is journaled'in the casingll.

An. upper .pinion A12 andl a llower geur Wheel 1d are Securedto the shaft v11. 'A .Wheel vis: secured to ther Shaft Ii. A pinion 16MiS Secured to the shaft dyadjaeent to its end. he gear Wheel li'ineshesywith the pinion 12,'and the pinion 16 meshes With tliegearjvheel 14. The pinions 12 und 13j and the gearxrwheels and lhcoliistitute Saeed-increasing .weer train, goraeoelerator, whereby' motion isv transmitted from the ShattvlOto theshaft 4. and, consequentlv, to the gate, 5. A drum 17 is mounted onv the uppenend of the snafu-10. The drum 17 has recess 18', `defining'shoulders 19..l The shaft 10 c :arries a project-M1120 located in the recess 18 and adapte'dftok cooperate with the]k Shoulders 19.. The construction is euch that the drum 1T inayhave a slight ,movement independentlyofthe.vshnjttlO, a lost `This invention aims to provide novel means whereby a ygate may be operated 'by the Wheels of an approaching" vehicle', the construction being such that the gte may be `operated b v handjit' vdesired.y

Another object of thel invention is to inipro've the" construetioii of t-lie accelerator \`vhereby 'motion is transmitted to the gate.

Figure 1 shows in top plan a gate and attendant parts, constructed in Vaccordance with*thefinventiong` F igur'eE 2 qis 1a`ve`it'ical section taken ap:- pr'oiinately 'onthez line 2 2 of Fig. 1, the view being',r` in substan'cefan elevation 'show in'g certain" ofthe posts and' partev carried thereby;

Figure" 3 is anele'vation wherein the isishot'vn closed,` certain'` outv the= posts, which are' adjacentto'` the observer, having Ybeen omitted Iin this figure of the' drawings;

Figure (1 is a; fragment'al elevation show ing'a 'portion'ot the gateand the post Whereon the gate 'is stipp'ortedthe" accelerator ap- .peering for the most part in" sect1on,"a s does the' casingg'wvherein the accelerator is enclosed. M A

F igure 5 is a Sectional detail, 'Showing the vmeans Wherebyfatthe 'will of an",operator,A pertain of' the iexible elements may 'be adiust'ed, tightened orloosene'd7 parts appearing in ele'vtioi'i;`

Figuren is a. sectional Vdetail showing 'the mounting of the"dr"umi.4 l Figure 7 vis 'a transverse Sectionl ot they Referring to Figures 1, 2 and 3; the nuk nieral `1l designates al supporter mninpost which is supplied lWith bearings 2,' vand with a Slovver hanger' 3. A- tubular shaft 4 is journale'dvin the bearings 2'. 'The shaft 4.1 isp'assed through the loop of they top hingeY of a gate 5 and'is held rigidly7 at 61 in' the'loop.V The to" bearing 2 and the hanger motion connection bet\v`eenthe drum 17l and the shaftI 10 ,thus beingvv provided. The utilityV of thiso'onstruction lwvill be niadeinan.- iives'thereinafter. A plate729 is secured at 732 to `the 'bottoni' 'of :they drum Hand surround-s'theVs/hiaft lQjycloselygthe plate. in conjunction yWith the ,projection 20, consti# tuting mezinstor holding the drum on the Shaft. Y y. f'

kIIousing's 21 are mounted; onI the adjacent tothe .post'nnd have outstanding"bearings22. A bearing 23jis mounted in thefground in yspa,ced"relation to the outer en d ofl eaeh housing-A21; `First ShattsQd ere moi ted to rockin the housings/21 andin the beari Qf's 2,3. The Shafts 24 have cranks 25. located',bet-Ween the housings 21 n bearings At their. inner ends. theshafte 24 are provided with crank1ar1ns26. Seeond Shafts 29 yare-mounted to -roclr in the bearings and have cranks 30 disposed be- Atween the hearings 22H-The inner ends ot the shafts 29 are equipped with crank :zrms

Each' post 38 carries a projectingr cup plate 32fsupporting idlers 33. The posts '3 3 are provided adjacentto their lower ende With.fraines'dwherein -idlers 34 are jour'- naled.v Flexible elements 3 5 and 36 are groun d.

3 support the :gate 5:

A verticallv Swinging'- latoh 6` is mounted on the1 .rate 5 and isadapted to cooperate 'ith a keeper on a striking post 8. Ath ditional gate-'engaging latch mechanism 5G ot any desired sort maj7 be mounted on the post ,8g Stop posts 28 are located on lupposite sides of the main post 1 and carryY keepn` ers Posts '38 are located outwardlytY of Wound in opposite directions around the th@ pOStS 28r y drum 17 and are securedat their inner endsV A casing 9 is secured to the upper end 'of thereto. The ii'eXiblej-elements 36 extene the poSt'I A i'irst shaft 10 is journaled in outwardly and oppositelj,1 over he moet foy;

ward of the idlers 33 and terminate in handles 37. rllhe handles 37 are of sufficient weight to be useful in taking the slack out of the flexible elements 86.

vLines 39 and 40 are' branched off from the flexible elements 35. The lines 39 and 40 extend outwardly and oppositely over certain of thc idlers 33, and thence downwardly, traversing the idlcrs 34, and tending in opposite directions therefrom.

rl`he flexible elements 40 are secured to the crank arms 31 of the shafts 29 while the flexible elements 39 are secured to the crank arms 26 of the shafts 24. A means is prof; vided whereby the elements 39 and 40 may be connected adjustably to the parts wherewith they coact. Thus, taking the crank arm 26 as typical, it will vbe observed that the crank arm 26 terminates in a finger 41,

whereon spool 42 is journaled for adjustment, the spool being held in place by a set screw 43. .j The spool 42 is provided with a perforated ear 7 30 to which the end of thc flexible element is secured. The flexible element 40 is wound about the spool 42 of the arm 31 and is engaged with the ear thereof, as'aforesaid. By rotating the spools 42, the flexible elements will be reele'd thereon, and when the set screws 43 are tightened up, theposition of the crank arm 26 and of the crank Handles 44, in the form of weights, are interposed in the flexible elements 40 and 39. An arm-45 projects from the drum 17. A flexible element 46 is attached to the arm 45 and is carried between guide rollers 47 journaled in a bracket 48 mounted on the gate 5. The flexible element 46 is connected at 49 to the latch 6. The drum 17 includes a top 731 which, resting on the end of the shaft 10 supports the drum.

Suppose that a. vehicle is approaching the device from the left, looking from the hinge post toward the latch post in Figures 1 and 2. The vehicle drives clear of the outside left hand crank 30, and engages the inside left hand crank 25, which is inclined with respect to the horizontal. The crank 25 transmits m'otion to the corresponding` shaft 24. The crank arm 26 on the inside left hand shaft 24 operates the drum 17 by way of the flexible elements S35- 40.

The drum 17 rotates independently of the i shaft 10, owing` to the provision of the 1rost motion connection 20-v-19. When the drum 17 rotates independently of the shaft 10, the flexible element 46 is pulled, and the latch 6 is raised out of engagement with the keeper 7, the gate thus being set free for swinging movement. One of the shoulders 19 now engages the projection 20, and motion is transmitted from the drum 17 to the shaft lO, the shaft being rotated. From the shaft 10, rotation is imparted to the shaft 11 by way of the gear wheel 15 arm 31 will be adjusted.-

Lessines and the pinion 12. From the shaft 11, rotation is imparted to the shaft 4, by Vway of the gear wheel 14 and the pinion 16. W'hen the shaft 4 is rotated, the gate 5 is swung to an open position, rapidly, owing to the ratio established by the relative diameters of the parts 151214-16, the ratio being inversely as vbetween the two Shafts, as two to one, the shaft 4 rotating twice as fast as the shaft 10. As the gate swings open, the latch 6 engages with the keeper 27 on the right hand post 28.

`When the drum 17 is rotated, as aforesaid, clockwise, the right hand flexible element 35 in Figure 1 is reeled onthe drum, and the right hand flexible element 39 in Figure 2 is raised, thereby elevatingr the corresponding closing crank to an angle of substantially forty-live degrees, being the outside vright hand crank. The vehicle drives clear of the inside right hand crank in Figure 1 and engages the corresponding closing crank 25. being the outer right hand crank,

whereupon the crank 25 is swung downward to ahorizontal position, the corresponding shaft V24 being rotated, and motion being transmitted through the drum 17, by way of the right hand flexible elements 39 and 35. Swing to the lost motion connection between the drum 17 and the shaft 10, the first operation is to disengage'the latch 6 from the keeper 27 on the post 28. Then, the .gate is swung to a closed positionV with respect tov the striking post 8. j

The foregoing operation presupposes that the vehicle is moving in Figures 1 and 2 from left to right. lf the vehicle movesv in an opposite direction, then thel cranks 30 become the actuating elements, the inside right hand crank 30 standing at substantially forty-live degrees, being the opening crank, the flexible elements and the crank arms 31 transmitting motion to the drum 17, through the flexible elements 35.

Having thus described t-he invention, what is claimed is f 1. In an apparatus of the'class described, a rotatably mounted shaft, a gate; means for connecting'the gate with the shaft, another shaft supported for rocking movement and having a vehicle engagingv crank and an arm, a Spool adjustably journaled on said arm and flexible element connected operatively with the shaft and wound about the spool and secured thereto.

2. In a device of the class described, a pair of shafts mounted in longitudinal alinement for independent rotation', a gate mounted on one shaft, means for operating the` other shaft, and a speed increasing gear train connecting the shafts.

ln testimony that l claim the foregoing as my own, l have hereto affixed my sig,-l

nature. Y j JAMES R. JACKSON. 

